399 lines
8.6 KiB
C
399 lines
8.6 KiB
C
/*
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* Copyright (c) 1998-2001, 2008 Sendmail, Inc. and its suppliers.
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* All rights reserved.
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* Copyright (c) 1983 Eric P. Allman. All rights reserved.
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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*/
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#include <sm/gen.h>
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SM_IDSTR(copyright,
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"@(#) Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers.\n\
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All rights reserved.\n\
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Copyright (c) 1983 Eric P. Allman. All rights reserved.\n\
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Copyright (c) 1988, 1993\n\
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The Regents of the University of California. All rights reserved.\n")
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SM_IDSTR(id, "@(#)$Id: praliases.c,v 8.96 2008/07/10 20:13:10 ca Exp $")
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#include <sys/types.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifdef EX_OK
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# undef EX_OK /* unistd.h may have another use for this */
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#endif /* EX_OK */
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#include <sysexits.h>
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#ifndef NOT_SENDMAIL
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# define NOT_SENDMAIL
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#endif /* ! NOT_SENDMAIL */
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#include <sendmail/sendmail.h>
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#include <sendmail/pathnames.h>
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#include <libsmdb/smdb.h>
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static void praliases __P((char *, int, char **));
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uid_t RealUid;
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gid_t RealGid;
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char *RealUserName;
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uid_t RunAsUid;
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gid_t RunAsGid;
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char *RunAsUserName;
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int Verbose = 2;
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bool DontInitGroups = false;
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uid_t TrustedUid = 0;
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BITMAP256 DontBlameSendmail;
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# define DELIMITERS " ,/"
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# define PATH_SEPARATOR ':'
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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char *cfile;
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char *filename = NULL;
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SM_FILE_T *cfp;
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int ch;
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char afilebuf[MAXLINE];
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char buf[MAXLINE];
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struct passwd *pw;
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static char rnamebuf[MAXNAME];
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extern char *optarg;
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extern int optind;
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clrbitmap(DontBlameSendmail);
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RunAsUid = RealUid = getuid();
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RunAsGid = RealGid = getgid();
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pw = getpwuid(RealUid);
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if (pw != NULL)
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{
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if (strlen(pw->pw_name) > MAXNAME - 1)
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pw->pw_name[MAXNAME] = 0;
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sm_snprintf(rnamebuf, sizeof rnamebuf, "%s", pw->pw_name);
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}
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else
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(void) sm_snprintf(rnamebuf, sizeof rnamebuf,
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"Unknown UID %d", (int) RealUid);
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RunAsUserName = RealUserName = rnamebuf;
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cfile = getcfname(0, 0, SM_GET_SENDMAIL_CF, NULL);
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while ((ch = getopt(argc, argv, "C:f:")) != -1)
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{
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switch ((char)ch) {
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case 'C':
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cfile = optarg;
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break;
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case 'f':
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filename = optarg;
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break;
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case '?':
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default:
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"usage: praliases [-C cffile] [-f aliasfile]"
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" [key ...]\n");
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exit(EX_USAGE);
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}
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}
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argc -= optind;
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argv += optind;
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if (filename != NULL)
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{
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praliases(filename, argc, argv);
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exit(EX_OK);
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}
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if ((cfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, cfile, SM_IO_RDONLY,
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NULL)) == NULL)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"praliases: %s: %s\n", cfile,
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sm_errstring(errno));
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exit(EX_NOINPUT);
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}
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while (sm_io_fgets(cfp, SM_TIME_DEFAULT, buf, sizeof(buf)) != NULL)
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{
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register char *b, *p;
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b = strchr(buf, '\n');
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if (b != NULL)
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*b = '\0';
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b = buf;
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switch (*b++)
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{
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case 'O': /* option -- see if alias file */
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if (sm_strncasecmp(b, " AliasFile", 10) == 0 &&
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!(isascii(b[10]) && isalnum(b[10])))
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{
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/* new form -- find value */
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b = strchr(b, '=');
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if (b == NULL)
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continue;
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while (isascii(*++b) && isspace(*b))
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continue;
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}
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else if (*b++ != 'A')
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{
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/* something else boring */
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continue;
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}
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/* this is the A or AliasFile option -- save it */
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if (sm_strlcpy(afilebuf, b, sizeof afilebuf) >=
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sizeof afilebuf)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"praliases: AliasFile filename too long: %.30s\n",
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b);
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(void) sm_io_close(cfp, SM_TIME_DEFAULT);
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exit(EX_CONFIG);
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}
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b = afilebuf;
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for (p = b; p != NULL; )
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{
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while (isascii(*p) && isspace(*p))
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p++;
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if (*p == '\0')
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break;
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b = p;
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p = strpbrk(p, DELIMITERS);
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/* find end of spec */
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if (p != NULL)
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{
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bool quoted = false;
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for (; *p != '\0'; p++)
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{
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/*
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** Don't break into a quoted
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** string.
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*/
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if (*p == '"')
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quoted = !quoted;
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else if (*p == ',' && !quoted)
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break;
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}
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/* No more alias specs follow */
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if (*p == '\0')
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{
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/* chop trailing whitespace */
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while (isascii(*p) &&
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isspace(*p) &&
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p > b)
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p--;
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*p = '\0';
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p = NULL;
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}
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}
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if (p != NULL)
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{
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char *e = p - 1;
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/* chop trailing whitespace */
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while (isascii(*e) &&
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isspace(*e) &&
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e > b)
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e--;
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*++e = '\0';
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*p++ = '\0';
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}
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praliases(b, argc, argv);
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}
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default:
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continue;
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}
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}
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(void) sm_io_close(cfp, SM_TIME_DEFAULT);
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exit(EX_OK);
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/* NOTREACHED */
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return EX_OK;
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}
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static void
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praliases(filename, argc, argv)
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char *filename;
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int argc;
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char **argv;
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{
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int result;
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char *colon;
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char *db_name;
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char *db_type;
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SMDB_DATABASE *database = NULL;
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SMDB_CURSOR *cursor = NULL;
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SMDB_DBENT db_key, db_value;
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SMDB_DBPARAMS params;
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SMDB_USER_INFO user_info;
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colon = strchr(filename, PATH_SEPARATOR);
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if (colon == NULL)
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{
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db_name = filename;
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db_type = SMDB_TYPE_DEFAULT;
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}
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else
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{
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*colon = '\0';
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db_name = colon + 1;
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db_type = filename;
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}
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/* clean off arguments */
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for (;;)
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{
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while (isascii(*db_name) && isspace(*db_name))
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db_name++;
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if (*db_name != '-')
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break;
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while (*db_name != '\0' &&
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!(isascii(*db_name) && isspace(*db_name)))
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db_name++;
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}
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/* Skip non-file based DB types */
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if (db_type != NULL && *db_type != '\0')
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{
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if (db_type != SMDB_TYPE_DEFAULT &&
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strcmp(db_type, "hash") != 0 &&
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strcmp(db_type, "btree") != 0 &&
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strcmp(db_type, "dbm") != 0)
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{
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sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"praliases: Skipping non-file based alias type %s\n",
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db_type);
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return;
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}
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}
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if (*db_name == '\0' || (db_type != NULL && *db_type == '\0'))
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{
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if (colon != NULL)
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*colon = ':';
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"praliases: illegal alias specification: %s\n", filename);
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goto fatal;
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}
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memset(¶ms, '\0', sizeof params);
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params.smdbp_cache_size = 1024 * 1024;
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user_info.smdbu_id = RunAsUid;
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user_info.smdbu_group_id = RunAsGid;
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(void) sm_strlcpy(user_info.smdbu_name, RunAsUserName,
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SMDB_MAX_USER_NAME_LEN);
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result = smdb_open_database(&database, db_name, O_RDONLY, 0,
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SFF_ROOTOK, db_type, &user_info, ¶ms);
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if (result != SMDBE_OK)
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{
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sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"praliases: %s: open: %s\n",
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db_name, sm_errstring(result));
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goto fatal;
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}
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if (argc == 0)
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{
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memset(&db_key, '\0', sizeof db_key);
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memset(&db_value, '\0', sizeof db_value);
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result = database->smdb_cursor(database, &cursor, 0);
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if (result != SMDBE_OK)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"praliases: %s: set cursor: %s\n", db_name,
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sm_errstring(result));
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goto fatal;
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}
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while ((result = cursor->smdbc_get(cursor, &db_key, &db_value,
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SMDB_CURSOR_GET_NEXT)) ==
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SMDBE_OK)
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{
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#if 0
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/* skip magic @:@ entry */
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if (db_key.size == 2 &&
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db_key.data[0] == '@' &&
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db_key.data[1] == '\0' &&
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db_value.size == 2 &&
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db_value.data[0] == '@' &&
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db_value.data[1] == '\0')
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continue;
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#endif /* 0 */
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(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
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"%.*s:%.*s\n",
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(int) db_key.size,
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(char *) db_key.data,
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(int) db_value.size,
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(char *) db_value.data);
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}
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if (result != SMDBE_OK && result != SMDBE_LAST_ENTRY)
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{
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(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
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"praliases: %s: get value at cursor: %s\n",
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db_name, sm_errstring(result));
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goto fatal;
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}
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}
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else for (; *argv != NULL; ++argv)
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{
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int get_res;
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memset(&db_key, '\0', sizeof db_key);
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memset(&db_value, '\0', sizeof db_value);
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db_key.data = *argv;
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db_key.size = strlen(*argv);
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get_res = database->smdb_get(database, &db_key, &db_value, 0);
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if (get_res == SMDBE_NOT_FOUND)
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{
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db_key.size++;
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get_res = database->smdb_get(database, &db_key,
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&db_value, 0);
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}
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if (get_res == SMDBE_OK)
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{
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(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
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"%.*s:%.*s\n",
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(int) db_key.size,
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(char *) db_key.data,
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(int) db_value.size,
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(char *) db_value.data);
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}
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else
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(void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
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"%s: No such key\n",
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(char *)db_key.data);
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}
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fatal:
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if (cursor != NULL)
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(void) cursor->smdbc_close(cursor);
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if (database != NULL)
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(void) database->smdb_close(database);
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if (colon != NULL)
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*colon = ':';
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return;
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}
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